Long connecting issues after migrating to oracle 9i

Hi
I have a vb application which connects to an oracle database. A few days back the oracle database was migrated from one server to another one. Ever since this migration the application is taking very long time to connect to the database (around 10mins!!!). Once the connection is established everything works normally as it used to.

Check in
http://www.freelists.org/archives/oracle-l/02-2006/threads.html#00130
for thread connection to the database is slow
and
http://www.freelists.org/archives/oracle-l/07-2007/threads.html#00252
for thread Slow sqlplus connection
and
http://www.freelists.org/archives/oracle-l/07-2004/threads.html#01677
for thread login delay with 9.2.0.5
For so long delays it more looks like some DNS/Network problem than DB.
Gints Plivna
http://www.gplivna.eu

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Am not sure if am posting in correct place, but need your help.

29ad939b-bcd1-4e67-983f-179a8c403333 wrote:
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different versions have different bugs
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In addition to Max's reply, you must be aware that you have to test your applications agains 10g database before you actually upgrade the database.
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Hi,
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=======================================================
SQL-02107 Program too old for runtime library; please re-precompile it
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=========================================================
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Hi,
Our applications database was migrated from oracle 8
to oracle9i, The oracle_home path was updated to the
newer version.
While accessing the databese using the new setup we
are facing SQLLIB mismatch problem
the description of error is as follows
======================================================
=
SQL-02107 Program too old for runtime library; please
re-precompile it
Cause: Your program was precompiled by an older
version of the Oracle Precompilers, which is
incompatible with this release of SQLLIB.
Action: Precompile the program with a newer version
of the Oracle Precompilers
======================================================
===
Please help in this regard
~akhil

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SERVER:
tnsnames.ora:
MCQUERY=
(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST=10.36.27.184)
(PORT=1521)
(CONNECT_DATA=
(SERVICE_NAME=MCQUERY)
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tnsnames.ora
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(DESCRIPTION=
(ADDRESS=
(PROTOCOL=TCP)
(HOST=10.36.27.184)
(PORT=1521)
(CONNECT_DATA=
(SERVICE_NAME=MCQUERY)
listener.ora
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Edited by: user10835577 on Aug 29, 2010 12:01 PM

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Hi,
Can you let me know what are the issues that i face when i migrate from oracle 8i to oracle 10g. I will be very thankful if you give me a list of issues that you face while migrating from 8i to 10g

In addition to Max's reply, you must be aware that you have to test your applications agains 10g database before you actually upgrade the database.
If you use CBO, it may produce different execution plans for one query when you run it in 8i and 10g. This may affect your application performances, which you don't like to happen.
Also you have to decide how much downtime you can afford during the migration. Can you afford some downtime and how much? If you can't than this makes the situation more complicated.
How big is your database? You may end up only with simple export/import solution using export import utility.
The bottom line is, whatever you decide, you must test your applications running against 10g database before you actually upgrade your database.

Long connecting issues after migrating to oracle 9i

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